Can't Invite Users on Self-Hosted Supabase Instance

Hi there,
When trying to invite users through the dashboard of my self hosted Supabase instance, I get and error that says

Failed to invite user: name resolution failed

Failed to invite user: name resolution failed

. I've verified that my SMTP credentials are correct and do work. What could be causing this issue? Are there logs somewhere I can check?

Can't Invite Users on Self-Hosted Supabase Instance - Supabase